permit required confined spaces (prcs)
Post on 13-Feb-2022
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Why should I care about Confined Spaces?
One of the leading causes of occupational fatalities in this country
The standard covers 240,000 workplaces and 12.2 million workers
Workers make 4.8 million entries/year Standard may prevent 85% of fatalities and
nearly 11,000 injuries Still more than 20 deaths occur annually!
Why should I care about Confined Spaces?
Fatality Statistics-Cause of Death • 47% Air (Oxygen, Gases, Vapors) • 21% Drowning (Engulfment) • 19% Toxic (Liquids, Vapors, etc above
Permissive Exposure Limit (PEL)) • 2% Electrocution (Due to tools the victim
took in with them) • 10% Blunt Force Trauma • 1% Burns ……Examples of what NOT to do!
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Know the CFR, NAVMC DIR, BO and your SOP!
29 CFR 1910.146 - Fed OSHA • Letters of Interpretation • General Duty Clause
NAVMC DIR 5100.8 - Chapter 14 BO 5100.1A W/Ch-1 - Base Policy Local SOP’s
Permit Required Confined Spaces (PRCS)
Confined Space: Definition
A confined space means a space that: • 1. Is large enough and so configured that an
employee can bodily enter and perform assigned work: AND
• 2. Has a limited or restricted means for entry or exit; AND
• 3. Is not designated for continuous employee occupancy.
Yes to all = “Confined Space”
Confined Space Hazardous Atmosphere:
Hazardous Atmosphere means an atmosphere that may expose employees to the risk of death, incapacitation, impairment of ability to self rescue, or acute illness from one or more of the following cause:
Confined Space Hazardous Atmosphere:
(1) Flammable gas, vapor, or mist in excess of 10 percent of its Lower Flammable Limit (LFL);
(2) Airborne combustible dust at a concentration that meets or exceeds its LFL; Note: This concentration may be approximated as a condition in which the dust obscures vision at a distance of 5 feet or less.
(3) Atmospheric oxygen concentration is below 19.5 percent or above 23.5 percent;
Confined Space Other Serious Safety or Health
Hazards
Electrical equipment Mechanical equipment Visibility Biohazards Claustrophobia Noise Radiation Temperature Vermin
Confined Space Common Hazards
& Causes Oxygen Deficient Atmosphere Less than 19.5% Oxygen Consumption
•Rusting metal, decomposing organic matter, drying paints solvents, fires
Displacement •Evaporating products, gas or vapor leaks,
decomposing matter, inerting tanks or vessels, fires generating Carbon Monoxide (CO) & Carbon Dioxide (CO2)
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Confined Space
Signs and Symptoms -O2 19.5% = Minimum acceptable O2 level 15-19% = Decreased ability for strenuous work and
impaired coordination 12-14% = Respiration increases, poor judgment 10-12% = Respiration increases, lips blue 8-10% = Mental failure, fainting, nausea,
unconscious, vomiting 6-8% = 4 to 5 minutes possible recovery, 8 minutes
fatal, 6 minutes 50% fatal 4-6% = Coma in 40 seconds, death
CSPM Jeff Myers 451-7449
Confined Space Common Hazards
& Causes Oxygen Enriched Atmosphere Oxygen above 23.5% Main concern is a fire hazard, causes
material to become unstable Will absorb in clothing Leaking O2 hoses from work in spaces
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Confined Space Common Hazards
& Causes: Hydrogen Sulfide (H2S) (Sewer gas) Affects central nervous system Produced by decaying organic matter and
human septic waste Rotten egg odor, affects olfactory senses Threshold Limit Value (TLV) - 10 PPM Air Purifying Respirator (APR) not approved
Confined Space Common Hazards
& Causes: CO
Carbon Monoxide from incomplete combustion of fuels and organic matter
No odor or warning properties By the onset of symptoms, in danger Threshold Limit Value (TLV) 25 PPM Affects central nervous system Air Purifying Respirator (APR) not approved
Confined Space Common Hazards & Causes:
Lower Explosive Limit (LEL)
LEL minimum concentration of a flammable gas or vapor that when mixed with air will explode or ignite
An LEL reading of 10% is the max amount of flammable gas or vapor which may be present for hot work
Are also extremely toxic below 10% For any LEL reading, other than normal meter
fluctuation, cancel the permit unless the cause is known
Confined Space Responsibilities: Entrant
Know the hazards, signs or symptoms and consequences of exposure
Properly use equipment • Monitors • Retrieval equipment • PPE • LOTO
Communicate with the Attendant
Confined Space Responsibilities:
Attendant
Perform no additional duties that might interfere with the attendants primary duty to monitor and protect the authorized entrant.
Confined Space Responsibilities: Entry Supervisor
Verifies that all procedures and equipment specified by the permit are in place before endorsing the permit and allowing entry
Terminates the entry and cancels the permit Verifies that rescue services are available and
that there is a means for summoning
Confined Space Responsibilities: Supervisor
Provide annual refresher training that address local procedures and that is approved by the CSPM.
Ensure that personnel receive the required initial and refresher training to include horizontal program training. Maintain documentation of training.
Ensure all PRCSs are properly labeled Ensure that internal audits of the program are
conducted.
Confined Space Responsibilities: Department
Head/CO/Directors Develop and publish an internal SOP to
include an inventory for each PRCS Ensure compliance with the training
requirements for all personnel as set forth in BO 5100.1A, NAVMC DIR 5100.8 and 29 CFR 1910.146.
Ensure personnel adhere to SOP for all entries Conduct and document regular program audits
Confined Space Permit
Purpose: • To ensure for safe entry into PRCSs • Provide a means for the Entry Supervisor to
document that the conditions for a safe entry have been met prior to employees making the entry
Historical data for the space for evaluating the hazards
Provide a copy to CSPM within 30 days
Confine Space Detector Calibration
Calibration for the different types of monitors will be conducted per the manufacturers instructions.
Monitors will be verified for proper operation daily prior to use.
Record the results of the calibration or bump test in the calibration log and on the permit.
Fresh air or zero calibrate the monitor prior to each entry of the day.
Confined Space Emergency Response
Non-Entry rescue authorized only! Most PRCS deaths are from would be
rescuers Maintain a means to communicate with
the Fire Dept, annotate on permit Dial 911!!
Permit Required Confined Spaces (PRCS)
Confined Spaces come in limitless places and sizes…all are DANGEROUS!
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